c# - how to bind date in Line series chart x axis windows phone 8.1 -

in line series chart want show date binding on x axis , on y axis index start 90 using wcf method access date

.xaml code

<charting:chart name="mychart" title="" margin="11,153,-2,39">   <charting:lineseries margin="0" independentvaluepath="item1"     dependentvaluepath="item2" isselectionenabled="true" title="blood glucose"   foreground="black" itemssource="{binding measurement}" /> </charting:chart> 

.xaml.cs

        string result = await wcfrestservicecall("get", "getbg1?email=" +          emailtxtbox.text + "");         result = result.replace("{\"getbg1result\":", "");         result = result.replace("]}", "]");         list<bg> data = jsonconvert.deserializeobject<list<bg>>(result);         int item1 = 0;         int item2 = 1;         int item3 = 2;         string a1 = "";         string b2 = "";         string c3 = "";         foreach (bg b in data)         {              item1 = b.measurement[0];              item2 = b.measurement[1];              item3 = b.measurement[2];                 a1 = b.date_[0].tostring();                 b2 = b.date_[1].tostring();                 c3 = b.date_[2].tostring();         }          list<tuple<string, int>> mylist = new list<tuple<string, int>>()         {              new tuple<string, int>(a1, item1),             new tuple<string, int>(b2, item2),             new tuple<string, int>(c3, item3)                      };          (mychart.series[0] lineseries).itemssource = mylist;        } 

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i have solved issue doing these lines of code

    protected async override void onnavigatedto(navigationeventargs e)     {          string result = await wcfrestservicecall("get", "getbg1?email=" +                                                        emailtxtbox.text + "");         result = result.replace("{\"getbg1result\":", "");         result = result.replace("]}", "]");         list<bg> data = jsonconvert.deserializeobject<list<bg>>(result);         int item1 = 0;         int item2 = 1;         int item3 = 2;         int item4 = 0;          item1 =int.parse( data[0].measurement);         item2 = int.parse(data[1].measurement);         item3 = int.parse(data[2].measurement);           list<tuple<string, int>> mylist = new list<tuple<string, int>>()         {               new tuple<string, int>(data[0].date_, item1),             new tuple<string, int>(data[1].date_, item2),             new tuple<string, int>(data[2].date_, item3),                     };          (mychart.series[0] lineseries).itemssource = mylist;        }